let's take mr. julian tang hasan henri, associate professor in the department of response re sciences at the university of less that good to have you with us. so once you will take on this, you think the government should be introducing restrictions and if so, what should they be doing? yes, well this, this viruses growing as a rapid rate and the study from imperial suggests that there's no decrease in clinical severity, that contrast of what the seen south africa, but in the face of uncertainty that controlled the forest and he more stringent measures. however, the british public is always often opposed to this. and i think that when we have problems trying to impose these measures now before christmas as they had last year, they had problems last year, imposing more restrictions during christmas, new year periods. all right, let's talk about the bot data says so far, all the vaccines effective against army cron or not, or do we not know, still you have to boosted or if you have to vaccine this is yes, there is some protection against infection. we think there's more protection again